Calculating machine



March 4 1924.

A. F. POOLE CALCULAT ING MACHINE Filed Auk. 11. 1921 3 Sheets-Sheet lH15 ATTRNEY March 4 1924. 1,485,881

A. F. POOLE CALCULAT I NG MACHINE Filed Aug. ll. 1921 3 Sheets-Sheet 2.96 FEI-4 y, I

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1921 I5 Sheets-Sheet 5 A. F. POOLE CALCULATING MACHINE Filed A1121. ll.

lMarch 4 1924.

Patented Mar. 4, 1924.

UNITED STATES- PATENT OFFICE.

ARTHUR F. POOLE, OF KENILWORTH, ILLINOIS, ASSIGNOR TO REMINGTON ACCOUNT-ING MACHINE CORPORATION, F NEW YORK, N. Y., A CORPORATION OF NEW YORK.

CALCULATING MACHINE.

Application tiled August 11, 1921.

To all whom t may concern.'

Be it known that I, ARTHUR F. POOLE, citizen of the United States, andresident of Kenilworth, in the county of Cook and State of Illinois,have invented certain new and useful Improvements in CalculatingMachines, of which the following is a specification.

This invention relates to improvements in calculating machines and it isespecially adapted for machines which comprise both registeringmechanism and key actuated recording mechanism. In the present instanceit is shown applied to that variety ot' such machines which has longbeen known as the Remington-Tabl combined typewriting and calculatingmachine. The construction and opera-tion of that machine areparticularly described in Patent No. 1,270,471, issued June 25, 1918 tothe Wahl Company, assignee of the inventor John C. IVahl.

To provide for the equipment of thai4 inachine with a clear-signal, twoforms oi signal-mechanism have been invented. One oi these, theinvention of Arthur F Poole, is described in Patent No. 1,311,710, andthe other, the joint invention of Hyman Gelber and Arthur F. Poole, isdescribed in an application for a patent, which was filed February 10,1919, and bears the Serial Number 276,172. In the use of a machineembodying either of these forms of signal-mechanism the operator mayneglect or forget to strike a key which is comprised in thesignal-mechanism and on the operation of which the true effect of thatmechanism depends.

The main object of the invention which is set forth and claimed hereinis to provide the machine'with means to warn the operator that he shouldstrike such key at the end of a clearing operation, but the invention isnot limited to that specific use.

This invention is shown and described in combination with thesignal-mechanism of the above mentioned application, but may readily becombined with said patented signal-mechanism or other similarsignal-mechanism, as the following description, it is helieved, willmake plain to any person skilled in the art.

The invention consists of features of construction, combinations andarrangements of parts, all ofwhic-h are set forth herein and defined inthe claims.

Serial No. 491,490.

In the accompanying drawings which include eleven figures and whichshow, besides said Golber-Poole signal-mechanism, only so much of aRemington-Wahl machine embodying the claimed invention as it is regardednecessary to illustrate herein for the urpose of making the descriptionof this mvention plain:

Figure 1 is a side and sectional elevation ofa Portion of the machine;

Figure 2, is a. side and sectional elevation of 14parts shown in Fig. 1,and of other parts;

igure 3, a front and sectional elevation of a part of a totalizer anddevices attached to it;

Figure 4, a. face view of a typeblock and fragment of a type bar.

Figure 5, a face view of another typeblock and a fragment of the sametype bar;

Figure 6, a diagrammatic front elevation of a row of column totalizers,a cross totalizer, and a sheet of a bank ledger;

Figure 7, a side and sectional elevation of a fragment of the machine;

, Figure 8, a horizontal .section on plane l8 8, Fig. 7 of thatfragment;

Figure 9, a similar horizontal section of that fragment, parts beingshown in positions differing from those shown in Fig-8;

Figure 10, a front elevation of a portion of the same fragment; and

Figure 11, a plan of mechanism and horizontal section of a casing,constituting a portion of the cross totalizer.

Like reference numerals designate like partsin di'erent views.

The illustrated portions of the machine are shown as they ap ear when itis ready for use on special wor and when the registering mechanismincludes six column-totalizers and a cross-footing totalizer.

Well known parts of the Remington-Wahl machine, which are shown, orpartly shown, herein and described in 'said Patent No. 1,270,471 are theframe 10 of the typewriter, parts 11, 12, 13, 14 and 15 of the frameworkof the calculating machine which are rigidly secured together andailixed to the frame 10 by means of fastenings in which the screws 16and 17, bracket 18, rivets 19 and bolt and nut 20 are included, theextension 21 of the typewriter-carriage, the main or vertical decimalcarriage or truck 22 connected to extension 21 by bolt and nut 23, thesecondary truck or cross-truck 24, the pick-upbeam 25 by which the crosstruck is connected to a column totalizer when this truck is drawnstep-by-step from right to left, the pick-up guard 26, the master wheels27 and 28, all of the other mechanism shown in Fig. 1 below thecross-totalizer 29 and in Fig. 2 below the column-totalizer 30, and allof the mechanism shown in cross-totalizer 29 (Fig. 1) exceptGolber-Poole signal-mechanism, which is particularly described below.The column-totalizer 30 (Figs. 1, 2 and 6) and the five othercolumn-totaliZers-31, 32, 33, 34 and 35 (Fig. 6) are mounted on andattached to the truck 22 and each of them delines a calculating zonethrough which the carriage travels. The cross-totalizer 29 is mounted onand attached to the cross-truck 24. The mechanism in each of thesecolumntotalizers is the same as that of the well known Wahl totalizer,which is particularly described in said Patent No. 1,270,471.Cross-totalizer 29 contains the lVahl mechanism to which Gelber-Poolemechanism has been added. Those parts of the RemingtonlfVahl machinewhich are not shown herein are all described in the patent last abovementioned. f

In totalizer 29 (Figs. 1 and 11) each of the gears 36, which are rigidlyconnected with the numeral wheels 37 and driven, when they are actuated,by the master wheel 28 acting through the carrying gears 38 andintermediate gears 39, has one short tooth 40. The length of this shorttooth is such as not to prevent gears 39 from properly driving gears 36.The angularly movable comb 41 mounted inthe framework of the totalizeron shaft 42 has prongs 43 equal in number to gears 36 and fast together.The spring 44 attached to the framework and bearing against the back ofone of these prongs tends to turn the comb from its normal position,which is that shown in Fig. 1. The relations of the short teeth 40 tothe numeral wheels 37 and prongs 43 of the comb are such that when the 0of any numeral wheel is opposite the sight opening 45 in the casing ofthe totalizer the short tooth of the gear 36 affixed to that numeralwheel is immediately in front of a prong 43. If a numeral wheel do'esnot register 0 then a long tooth of the gear is immediately in front ofthe prong. Unless all of the numeral whels of the totalizer register 0,the spring 44 cannot turn the comb but merely presses a prong or prongsthereofy against one or more of the long gear teeth. If all numeralwheels but one of the totalizer register 0 and that wheel is turneduntil it also registers O the spring 44 turns the comb until it isarrested by the co-action or' one or more of the short teeth 40 and oneor more of the prongs 43.

The arm 46, fast on a part of comb 41, stands directly behind theangular movable latchbar 47. This vbar is mounted on the stud 48, andthe spring 49 is attached to the bar and to the pin 50 tends to swingthe upper end of the bar backward. The stud 48 and pin 50 are fixed inthe right side plate of the totalizer. This bar has the shoulder 51. The`pin 52, fixed in this bar, extends through a slot in the right sideplate of the totalizer and a little beyond the outer face of the sideplate (Fig. 6) and to it is afiixed the knob 52u. The latchbar 47normally makes contact, a little below shoulder 51, with the front endof arm 53 o1 lever 54, the upper end of the bar being a short distancefrom arm 46 when the comb, latchbar and lever 54 are all in their normalpositions. The lever 54 is mounted on the shaft 55, which supports onesct of the swinging arms 56 comprised in the lVahl totalizer. and whenthis lever is in its normal position arm rests on the collar 57 on theshaft 58 which supports the carrying gears 38. The spring 59, attachedto arm and to shaft`6t) in the framework of the totalizer', tends tokeep this lever in its normal position. In the other arm, or tail, 61 ofthe lever 54 is a slot 62 similar to those at the lower ends of theswinging arms 56 of the lVahl totalizer. This lever is close to theright side of the totalizer, its arm 53 being close to the carryingwheel 38 which is at the right end of the series of carrying wheels.Thespace occupied by the lever is called the sub-units place of thetotalizer since its width is that of a decimal place and it is at theright of and next to the lowest or units decimal place of the totalizer.Then the totalizer makes that step in which the carrying wheel of lowestorder is disengaged from thc master wheel 28, the i'ront and rear wallsof the slot 62 in the tail 6l of the lever are brought into alignmentwith the upright arm 63 of the master dog 64, which every Remington-Wahlmachine contains when it includes a cross totalizer. The rearwardlyprojecting tooth 65 of the master dog extends under the rack 66 fast onthe cross'truck 24 (Fig. 1). The dog is connected by the roller 67,mounted on it at its lower end, with the cam 68 having in it the slot 69in which the roller loosely fits. The dog 64 and cam 68 are on thearbors 70 and 71 respectively, and these Ltrbors are supported by andhave bearings in parts of the framework. This cam is connected by thepin 72 to the link 73 which is pivoted to the arm 74 fast on shaft 75. M

The master dog 64 is a duplicate of the master dog 76 (Fig. 2) which issupported by parts of the framework on the arbor 77 and has the uprightarm 78 and 'rearwardly projecting tooth 79, and on which at its lowerend is the roller 80. The tooth 79 extends under the rack 81 (Fig. 1)fast on sal bar 89 mounted in arms 90 also faston` the rock shaft. Thearm 91 fastened to this rock shaft at its right end by the screw 92, andthe arm 93 fastened to the shaft 75 at its left end, are connectedtogether by the link 94, these arms being )parallel and of the sainelength so that the two shafts rock alike. The fan 88 is connected by thelink 95 to the key lever 96. This is the key lever to which the 0printing type bar 97 (Figs. 4 and 5) of the machine is connected. Thetypeblock of this type bar may be either the block 98 (Fig. 4) or theblock 99 (Fig. 5). These blocks are alike except that block 98 has onit, in the upper case position, a clear-signal type 100, shown as anasterisk type, whereas block 99 has no upper case type.

On ythe fan 88 are the upper series of ratchet teeth 101, and lowerseries of ratchet teeth 102. lVhen the key is depressed the full strokepaw] 103 acts on the teeth 101, and when the key rises the full strokepawl 104 acts on the teeth 102. 'The arm 105, fast on the rock shaft towhich arms 87, 90 and 91 are fixed. extends over the arm 106 rigidlyattached to pawl 104, and as the key moves downward arm 105 acting onarm 106 forces pawl 104 out of the path of the teeth 102; and pawl 103has an arm (not shown) in position to be acted on by arm 105 to releasesaid pawl 103 during the up-stroke of the key.

The sector 107 which is mounted on the upper sector shaft of themachine, and which drives master wheel 27 through intermediate gearing,gears 108 and 108a comprised in that gearing, the lower sector shaft109, the sector 110 which is'mounted on shaft 109 and drives masterwheel 28 through intermediate gearing, the gears. 111 and 111n ineludedin this intermediate gearing, the arms 112 and 1'13 parallel, equal inlength and fast on the upper and lower sector shafts respectively. thelink 114 connecting these arms together, the gooseneck 115 similar` toeight others of a series, andthe series of arms` 116 which are fast onthe upper sector shaft and on which the nine goosenecks act to impartdifferent angular movements to that shaft, can be identified readil itis be? lieved, as parts of the Remingtonahl machine `described in theaforesaid patedtv No. 1,270,471, and therefore it is regarded asvunnecessary to describe herein more fully than has been done, theconstructionof the mechanism which is composed of these parts. Sufficeit to say that master wheel 27 can be turned for addition or subtractionby shifting gears 108 and 108a so that one or lthe other of them mesheswith sector 107, and master wheel 28 can be similarly controlled byshifting gears 111 and 111. In practice, at the completion of acalculation a totalizcr is cleared by setting its master wheel forsubtraction and copying the total by striking the appropriate numeralkeys.

That part of the mechanism of totalizer 29 which is Golber-Poolesignal-mechanism, shown in their aforesaid application, consists of comb41 in which arm 46 is included, the latchbar 47 and the lever 54,arranged as described above and represented in Figs. 1 and 11. Totalizer29, illustrated herein, and the single totalizer illustratedin thatapplication are duplicates. Either may be substituted for the other andused at will as a column totalizer or a cross footing totalizer in anyordinary Remington-lVahl machine. Whenever any numeral wheel oftotalizer 29 is lactuated by the depression of a key, both the mainmaster dog 76 and the other, or secondary, master dog 64 are rocked soonafter the'; key begins to move so that their upright arms 78 and 63 moveforward and their teeth 79 and 65 engage racks 81 and 66 respectively.The numeral wheel is turned after the dogs engage, and while theycontinue to engage, the racks, but before the keyreaches the end of itsstroke. At the end of the key stroke the master dogs suddenly return totheir normal positions, and then, as the key rises, .the escapementacts, the carriage steps, trucks 22 and 24 are drawn to the left, theactuated numeral wheel is carried to the left of master wheel 28, andthe next decimal place below that numeral wheel is brought into registerwith the master wheel.

When the totalizer 29 has been operated for the purpose of clearing itby subtracting the total, and has reached the position in which itstands when the sub-units decimal place is in register with the masterwheel, the operator, to ascertain whether the totalizer is clear or not,should depress the case shift key of the typewriter and strike the clearsignal key 96, and by the same act can record the clear signal at theright of the recorded total if the type bar 97 has on it4 the typeblock98. The master dogs are rocked as above explained and the type bar 97 isactuated, during the downward movement of this key, but, this being the0 key, the sector shafts are not turned since fan 88 does not act on anygooseneck. The master dog 64 acting through its forwardly moving uprightarm 63 on lever 54 raises the .front end of arm 53 of that lever abovethe level of shoulder 51 of latchbar 47. If

the totalizer is not clear the latchbar is then lturned by spring 49until the bar makes contact near its upper end with arm 46 of comb 41,and meanwhile shoulder 51 passes under the front end of lever-arm 53.When the finger of the operator is removed from the key the latchbarprevents lever 54 from returning to its normal position and this lever,with which upright arm 63 of master dog 64 makes contact at the back ofslot 62, prevents the master dogs from returning to their normalpositions. Consequently trucks 24 and 22 and the typewriter carriage`arelocked, for teeth 65 and 79 of the master dogs are kept engaged with theracks 66 and 81 on the trucks. Moreover, master dog 64 prevents cam 68,rod 89 and those parts of the mechanism which connect each with theother, from returning to their normal positions, so that pawl 103remains engaged with the last ratchet tooth of the series 101 andprevents fan 88 from turning backward, and t lerefore the key is helddown. Hence the achine is so locked up as to render it usel ss until thelocked parts are unlocked.

he operator perceivingvthis knows that the totalizer is not clear an'dthat a mistake has been made. He then unlocks the locked parts bypulling knob 52a forward, thus releasing lever 54 from latchbar 47,whereupon the lever 54, master dogs, fan 88, key lever 96 and otherparts return to their normal positions, the cscapement acts, and thetypewriter carriage, trucks 22 and 24, and the totalizer step to theleft. .Thereafter the gear shift is operated, the incorrect numberrecorded on the work sheet is added, the recorded number is erased, thegearshift is again operated, and the total then shown by the registeris`subtracted and recorded.

lVhen the correction has been made and the Itotalizer is clear and thesub-units decimal place has been brought into register with the masterwheel, the clear signal key should be actuated again to record a clearsignal mark either' by printing it in place of .the previously printedmark ifA that was erased, or by printing it over that mark. In case ,theclear-signal type bar has on it the typeblock 99 the clear signalmechanism operates as described except that a. clear-signal mark is notrecorded.

If a clearing operation is correctly performed, then as soon as thetotalizer becomes clear spring 44 turns comb 41 as above explained, andthe upper end of arm 46 is moved to and held against latchbar 47. Thenspring 49 cannot turn the latchbarfalthough the Jfront end of arm 53 oflever 54 may be raised above the level of shoulder 51, for that springis weaker than spring 44. Therefore, whenever the totalizer is clear,the latchbar does not prevent lever 54 from returning to its normalposition after that lever has been actuated by master dog 64, andthe-lever does not prevent the master dog or any other part of theclear-signal mechanism from returning to its normal position as soon asthe key is allowed by the operator to rise, and during the upwardmovement of the key the typewriter carriage, trucks and totalizeradvance as they commonly do after a numeral wheel has been actuated.Then, if another key 1s struck, the desired action of the machine isobtained, or if the use of the machine is discontinued it remains readyfor use at any other time.

Obviously, an operator about to use the machine may ascertain whetherthe totalizer is clear or not by first setting it so that sub-unitsplace is in register with the master wheel and then striking the clearsignal key and observing what follows.

By striking any numeral key when the totalizer is properly set, anoperator could find that the totalizer was or was not clear, but shouldany key of the series bearing the Figures 1 to 9 both inclusive bestruck not only would the clear signal mechanism contained in thetotalizer be actuated but a figure would be recorded and a gooseneck,the sector shafts, the sectors and other mechanism would be actuatedidly.

If an operator using a Remington-Tabl machine equipped with theGolber-Poole signal mechanism which has been above described, should notstrike the clear signal key or otherwise test the totalizer at theconclusion of a clearing operation, an error made in an inc orrectclearing operation might cause much trouble, for not only would itaffect the work then sup osed to be finished but also, unless it shoulbe discovered prior to a subsequent use of the machine, would affectlater work.

The invention claimed herein, and comprising devices now to bedescribed, is intended to'frender certain the discovery of error in anincorrect clearing operation be- Y fore the totalizer can move againafter it makes the step in which the units carrying wheel 38 passes fromengagement with the master Wheel.

When the special work above referred to is being done, the cross footingtotalizer 29 is cleared by subtracting in that totalizer the amount ofthe total, and said total silnultaneously is recorded in the columnheaded Balance on the sheet 117, and registered again by adding it intotalizer 30.

On the right wall 118 of this column totalizer is the latch 119 whichforms one member of an automatic lock. This latch is attached to wall118 by the headed stud 120 which is fixed in the wall and on which thelatch may turn. To the pin 121 fixed in the latch and to the pin 122fixed in the wall 1s connected the s ring 123 which pulls on pin 121.The latc 119 comprises the rearwardly projecting upper portlon 124, the

spur 125 and the e111 126. The spur125 ex;

tends between teeth of rack 127 fast on truck 22 to which the totalizer30 is attached. When the above described member of the lock is engagedwith the other member, which is stationary, the 'position of the movablemember 119 is that in which it is shown by Figs. 1, 2, 7, and 8.

The Remington-)Vahl machine comprises an upwardly and forwardlyextending' bracket 128 rising from part l1 of the framework of thecalculating mechanism. This bracket supports the roller by which truck22 is guided at the top, and which is composed of the disk 129 andspindle 130 (Fig. 7 The spindle passes loosely through the bushing 131which is fast in bracket 128 and has at its upper end the flange 132.The screw 133 driven tightly into spindle 130 forms at the upper end ofthe spindle a flange which rests on the bushing and keeps disk 129 closeto the lower end of the bushing. According to the present invention, thestationary member of the lock and the pointer 134 are parts of one pieceof stock, bent so that it fits on the top and front of the bracket 128,and drilled or punched so that it fits on the bushing 131. This memberis composed of the parts 135, 136 and 137. The horizontal part 135through which the bushing passes, extends between the flange of thebushing and top of the bracket and is fastened tothe bracket by thescrew 138 and bushing 131. The part 124 of latch 119 is ada ted undercertain conditions to be moved y spring 123 into the space 139 (Fig. 10)between the vertical parts 136y and 137 and thus to lock the truck 22and the typewriter carriage against movement in either direction. Onpart 136 at the left edge thereof is the bevel 140, and on part 137 atthe right edge thereof is the bevel 141, said bevels being so shapedthat part 124 of latch 119 will slide over them without being arrested.The cam-shaped collar 142 fits loosely on bushing 131y and betweenbracket 128 and disk 129. When this collar is in its normal position theprojection 143 thereof is in contact with part 137 of the stationarymember of the lock and-extends a little in front of the plane of itsfront face (Figs.

9 and 10). The spring 144, which is attached by screw 145 to bracket 128and enters a hole in the collar, tends to keep the collar in its normalposition. The projection 143 is so shaped that part 124 of latch 119will slide over it during the motion of the carriage. toward the rightand will be prevented thereby from entering the space 139: but duringtravel toward the left, said part 124 will strike the abrupt portion ofrejection 143, turn the collar 142, and snap into space 139, as shown inFigs. 7 and 8. This occurs on that step of the carriage which followsthe writing o f the last digit of the Balance and registering said digitin totalizer 30, so that at that time the carriage becomes locked in thesub-units position of totalizer 30.

The tail 126 of member 119 of the lock extends behind the upper end ofthe releasing device 146 (Figs. 1, 2 and 3), and normally is kept by theaction of the spring 123- in contact with it. Said releasing device isattached to wall 118 of the totalizer by the headed and shouldered screw147 on which the device may turn. The spring 148 connected at one end topin 149 fixed in this device, and at the other end to pin 150 fixed inthe wall, pulls on pin 149 and normally keepsthe device in contact withpin 151 also fixed in the wall. The lower portion 152 of this deviceextends into the recess 153 where the lower edge of .wall 118 has theshape shown in Figs. 1 and 3, and this part 152 of the releasing deviceis in the sub-units decimal'place of the totalizer and so locatedtherein that it rests directly in front of and close to the upright arm78 of master dog 76 when the sub-units decimal place is in register withthat master dog. In short, part 152 is in position to be operated bymaster dog 76.

On the heel 154 of totalizer 30 is the lug 155 (Figs. 3, 2 and 1) whichis offset, so that it is located close to and on the right of thesub-units decimal place. This lug engages with` the pick-up-beam 25 bywhich truck 24 is drawn step-by-step to the leftl when numbers aieregistered in the cross totalizer. Pick-up guard 26 has to this lug therelation which it commonly has to the heel of an ordinary columntotalizer. Totalizer 30 is provided with this off-set lug to compensatefor a slight difference between the cross totalizer 29 andthe commonWahl totalizer in respect to the location of latch 156 (Fig. 1), whichlits in recess 157 in plate 158 fast on truck 24 when the totalizer islocked to the truck. The right wall of totalizer 29 is separated fromthe carrying wheel 38 of lowest order by the sub-units decimal place, inwhich the arm 46 of comb 41, latch bar 47 and lever 54, are locatedLatch 156 is close to the inner face of that wall so that the latch alsois in the sub-units decimal place, and the location of totalizer 29 ontruck 24 is one decimal place to the left of that of a common Wahltotalizer attached to this truck, the latch of the latter being in theunits instead of the sub-units decimal place. Therefore, if the -l1'elof totalizer 30 was exactly like that of alecmmon Wahl totalizer inrespect to both form and location, cross totalliaer 29 would be nearerby a decimal place "than it should be to totalizer 30 when the heel ofthe latter was engaged with the pick-up-beam. Buti. when the off-set lug155 is engaged with the" pick-up-beam, whatever decimal place of nar-fcolumn totalizer 30 vmay be in register with master Wheel 27 the likedecimal place o cross totalizer 29 is in register with master wheel 28.

To adapt column totalizers 31, 32, 33, 34 and 35 to engage with lthepick-up-beam when each is at the roper distance from cross totalizer 29,the right side plate of each of these column totalizers is put at thedistance of a decimal place fromy the .carrying wheel of lowest order,i. e., just at the right of the sub-units decimal place, indicated inFig. 6 by reference numeral 159. rIhat side plate, including the heel,is like the right side plate of a common Wahl totalizer.

- The arm 160 with roller 161 mounted thereon (Fig. 6), and the camplates 162 attached to column totalizers 30, 31, 32 and 33, and arrangedto act on roller 161 and depress it as they are drawn over it in theoperation of the machine, are well known parts of the gear-shiftingmechanism of the Remington-Wahl machine, which mechanism is described inthe above mentioned Patent No. 1,270,471 and by means of which mechanismthe machine may be put in condition to add, or in condition to subtract,or in condition to add in one totalizer and subtract in another. Thecams 162 here shown are adapted to set the actuator of cross totalizer29 for subtraction. The machine herein described, when it is in use onthe special work above mentioned, is in such condition that numbers areadded in each of the column totalizers, and a number added in .totalizer30 or 31 or 32 or 33 is simultaneously subtr""- =;l in the crosstotalizer 29, and a num' added in totalizer 34 or 35 is simultaneouslyadded in the cross totalizer.

Ledger sheet 117 (Fig. 6) shows entries made in an account, oftransactions dated December 10, 17 and 18, 1920. The sheet indicate'sthat on December 10 the deposit, or sum of the deposits, and the balancewere equal, each being 546.27. That would be the case if the account hadthen been opened, on

'the deposit by J. Doe of 546.27', and if it had not become active untilDecember 17. When the operator makes the record for December 17 the onlyentries which he finds on the sheet are,.Dec. 10, 1920, and 546.27appearing under Deposits, and 546.27 appearing under Balance He puts thesheet in the machine and, supposing that he does thework correctladjusts it on the laten 163 and writes 546.27 under Old alance. Thatamount is simultaneously added both in column totalizer 35 and crosstotalizer 29, and if the cross totalizer was clear as it should havebeen, it then registers 546.27. Next, he line spaces and draws thecarriage to the right, and on the new line records the date (Writtentwice), the amounts of checks cashed and the -amount of deposits. Thecross totalizer then registers .tered in the cross totalizer is bein thedifference between 546.27 +100 and 27.50-}-13.85, to wit, 604.92. Theoperator, finding this to be so by looking at the cross totalizer,writes 604.92 under Balance Simultaneously this amount is subtracted inthe cross totalizer, which therefore is left clear. He should then provethat the cross totalizer is clear by depressing the case shift key andstriking the clear-signal key and printing the clear-signal mark 165 atthe right of 604.92 in column headed Balance, in other words, in thesub-units position of said column. After this the sheet is removed fromthe machine. It will be perceived that the machine is set up to gothrough a regular program of calculatmg and recording operations, asjust described. When the record for Dec. 18, is made, first the amountof the balance 604.92 is written under Old balance and then the numberswhich appear on the next line are written in order. After the writingand registering of the amount of the last check, viz, 63.50 the crosstotalizer will show the new balance 384.32. This amount is copied in thecolumn headed Balance and the cross totalizer is thereby cleared. Then,after the clear-signal key is or should have been struck to prove thatthe cross totalizer is clear, the sheet is removed from the machine. lnFig. 6 the parts are shown in the positions they occupy after theWriting of the balance, 384.32, and before the striking of the clearanceproof key 96.

Whenever the amount of a balance regiswritten on the sheet under theheading alance, part 124 of latch 119 carried by totalizer 30 is forcedagainst and across the bevel 141 of part 137 of the stationary member ofthe above described lock, the latch then turning slightly om pin 120 andthe spring 123 being stretched. When the units decimal place gets intoregister with master wheel 27, part 124 of the latch is close to or incontact with part 143 of collar 142, and in the next step of thecarriage and totalizer, that being the ste in which the sub-unitsdecimal place is rought into register with the master wheel, the latchturns the collar by pushing the part 143 to the left, and at the end ofthe stepping movement the latch is turned by spring 123 so that part 124of the latch enters s ace 139, between parts 136 and 137 of the ot ermember of the lock. The latch in thus acting on collar 142 bends spring144 and turns the collar to the position in which it is shown in Fig. 8.On the engagement of latch 119 with the stationary member of the lock asdescribed, of course totalizer 30, truck 22 and the typewriter carriageare all locked, and they cannot be unlocked by depression of the spacekey or any of the letter keys of the machine. But they can be unlockedby a stroke of the lllii lli l o q l of spring 144,

clear-signal key if the cross totalizer is clear. The operator knowingthat the machine is automatically locked at the end of each operation inwhich the cross totalizer is or should be cleared, and probably noticingeach action of latch 119 as it engages with the other member of thelock, is warned that he should strike the clear-signal key to avoid therisk of finding the machine locked when he shall start to make the nextrecord. Should he then find the machine locked he will then be notifiedthat an error has been made in the last record and be put to extratrouble in correcting it. This warning Ior notification of error is duewholly to the presence of the locking mechanism associated with thetotalizer 30, and consisting of the latch 119 and other member of thedescribed lock and the releasing device 146. In the Gelber-Pooleinvention, referredto above, there is nothing to prevent the operatorfrom forgetting or neglecting to strike the clearance proof key 96, andshould he fail to strike this key an error might result. In my hereindescribed invention the mechanism associated with the totalizer 30, bylocking the carriage, warns the loperator that he should press, ornotifies him' that he should have pressed, this key.

As the clear-signal key descends when it is struck to unlock the lockedparts of the machine, and asmaster dog 64, actuated by the clear signalkey, is turning lever 54 in totalizer 29 as above described, arm 78fofmaster dog 76, also actuated by the clear signal key, forces part 152 ofreleasing device 146 forward, so that latch 119 is turned, by the actionof the releasing device on tail 126 of the latch, until part 124 of saidlatch is withdrawn from slot 139 and part 143 of collar 142 escapes frompart 124 of the latch. Immediately thereafter the collar .returns'to itsnormal position under the action part 143 passing behind part 124 of thelatch (Fig. 9) and preventing said latch from re-entering slot 139. Ifthe cross totalizer is clear the master dogs return to their normalpositions at the end of the downward movement of the key, and as the keyrises the escapement acts and the carriage and totalizer step. But ifthe cross totalizer is not clear, lever 54, as above explained, preventsmaster dog 64 from returning to its normal position, and the trucks arelocked by teeth 65 and 79 of the master dogs which'are then engaged withthe racks 66 and 81 on the trucks. Then the operator, thus notified thathe has made a mistake, pulls forward knob 52 on latch bar 47, thusreleasing lever 54 and unlocking the machine, whereupon he makes thecorrection before the sheet is withdrawn from the machine.

Whenever latch 119 passes the stationary member of the lock as truck 22moves fdrom left to right, part 124 ofthe latch is forced forward bybevel 140 and is prevented from -125 shall clear rack 127.

Although 'the special work above described is preferably done with amachine that includes the six column totalizers shown herein, it usuallybeing desirable to re ister the column totals, yet the records cou d bemade by operating the machine as above described if any or all of thetotalizers 30, 31, 32,` 33, 34 and 35 should be replaced with dummies.The clear-signal mechanism and above described lock would erform theirfunctions if latch 119 and re easing device 146 were to be mounted on adummy instead of on totalizer 30. A dummy comprises the frame or casingand the truck-engaging latch of a totalizer, the casing not containingregistering mechanism. A dummy, Aas well as a totalizer, supported bytruck 22, if latch 119 and releasing device 146 were Inounted on thecasing, would adjustably connect the latch and releasing device to thetruck, and would properly engage with the pick-up beam to enablestepping movements to be imparted to the cross truck and crosstotalizer.

Various changes may be made without departingI from my invention.

What claim as new and desire to secure by LettersLPatent, is

1. In a calculating machine, the combina-l tion with a travelingcarriage, a totalizer, an actuator for said totalizer, andclearanceproof mechanism including a key, of means for automaticallylocking an essential part of the machine at a predetermined point in thetravel of said carriage, and means whereby said key releases the lock.

2. In a calculating machine, the combination with a carriage travelingthrough a series of computing zones, a totalizer capableof registeringnumbers in each of said zones, and clearance-proof mechanism for saidtotalizer including a key, of means for automatically locking anessential part ofthe machine at a predetermined one of said zones, andmeans whereby saidkey releases said lock.

3. Inl a calculating machine. the combination with a carriage, atotalizer, numeral keys for operating said totalizer, and a universalbar for said keys, of means for locking said carriage at a predeterminedpoint in its travel, clearance proof mechanism for said totalizerincluding a key Which operates said universal bar, a dog operated bysaid universal bar, and releasing means for said lock including a partwhich at said predetermined point of carriage travel is in o0- operativerelation to said dog.

4. 'In a calculating machine which embodies key-actuated recordingmechanism in which a carriage is included, the combination of anautomatic lock which acts on the carriage and by which movement of thecarriage in either direction is prevented and the automatic action ot'which is controlled by the carriage` and key-operated mechanism tounlock the carriage.

5. In a calculating machine which embodies key-actuated recordingmechanism in which a carriage is included, the combination of anautomatic lock one member of which has a stationary support and theother member of which is mounted on a support to which motion isimparted by the carriage, and key-operated mechanism to force one memberof the lock from the other member.

6. In a calculating machine Which embodies key-actuated recordingmechanism in which a carriage is included, the combination of anautomatic lock which acts on the carriage and the automatic action ofwhich is controlled by the carriage, and mechanism which constitutes aclear-signal and which includes a key and means actuated thereby tounlock the lock.

7. In a calculating machine which embodies key-actuated recordingmechanism in which a carriage is included, the combination ot anautomat-ic lock one member of which has a stationary support and theother member of which is mounted on a support to which motion isimparted by the carriage, and mechanism which constitutes a clearsignaland which includes a key and means actuated thereby to force one memberof the lock from the other member.

8. In a calculating machine which embodies key-actuated recordingmechanism in which a carriage is included, the combination of anautomatic lock which acts on the carriage and the automatic action ofWhich is controlled by the carriage, and mechanism which constitutes aclear-signal and a part of which is a mark-printing device and whichincludes a key and means actuated thereby to Jforce one `member of thelock from the other member.

9. In a calculating machine which embodies key-aetuated recordingmechanism in which a carriage is included, the combination of anautomatic lock one member of which has a stationary support and theother member of which is mounted on a support to which motionV isimparted by the carriage, and mechanism which constitutes a clear-signaland apart of which is a markprinting device and which includes a key andmeans actuated thereby to force one member of the lock from the othermember.

10. In a calculating machine which embodies a stepping part and anescapement whereby the stepping movement thereof is controlled, hecombination of an automatic lock which holds said part fast in aparticular one of the positions to which said part steps and one memberof which lock is mounted on said part and the other member of which hasa stationary support, and keyoperated mechanism to iorce one member ofthe lock from the other.

11. In a calculating machine which embodies a part that has a steppingmovement, the combination of an a utomatic lock one member of which ismounted on said part and the other member ot' which has a stationarysupport, a releasing device mounted on said part and adapted to forceone member of the lock from the other, and key-actuated mechanismcomprising a part to actuate the releasing device.

12. In a calculating machine which embodies a part that has a steppingmovement, the combination of an automatic lock one member of which ismounted on said part and the other member of which has a stationarysupport, and mechanism which constitutes a clearsignal and whichincludes a key and means actuated thereby to force one member of thelock from the other member.

13. In a calculating machine which embodies a part that has a steppingmovement, the combination of an automatic lock one member of which ismounted on said part and the other member of which has a stationarysupport, a releasing device mounted on said part and adapted to forceone member of the lock from the other, and mechanism which constitutes aclear-signal and which includes a key and means connected therewith toac tuate the releasing device.

14. In a calculating machine which embodiesadecimal-truck, anescapement, and key actuated recording mechanism that includes astepping carriage to which the truck is connected and the .steppingmovement of which is controlled by the escapement, the combination of alock which holds the truck fast in a particular one of the positions towhich the truck steps and one member of which lock is supported by thetruck and the other member of which has a stationary support, and keyoperated mechanism to force one member of the lock from the othermember.

15. In a calculating machine which embodies atraveling totalizer, anactuator ast which the totalizer travels, and a trave ing part to whichthe totalizer is connected when it is in use, the combination of a lockone member of which `is su ported by said traveling part and the othermember of which has a stationary support and is 1ocated Where theAtraveling member will engage with it when the sub-units decimal placeof the totalizer is in register with the actuator, and key operatedmechanism to force one member of the lock from the other member. l' Y16. In a calculating machine which embodies a traveling totalizer, anactuator ast which the totalizer travels, and a trave in part tc whichthe totalizer is connecte when it is in use, the combination of a lockone member of which is supported by said traveling part andthe othermember of which has a stationary support and is located where thetraveling member will engage with it when the sub-units decimal place ofthe totalizer is in register with the actuator, key o erated mechanismto force one member o the lock from the other member, and mechanism madeeffective by the totalizer unless it is in the cleared state to precludemovement from a certain position of one of the parts of this keyoperated mechanism.

17. In a calculating machine Which embodies a traveling totalizer, anactuator past which the totalizer travels, a device which has a steppingmovement and to which the totalizer is connected when it is in use, anda decimal carriage to which said device is adjustably attached, thecombination of a lock one member of which is supported by said deviceand the other member of which has a 'stationary support and is locatedWhere the travelin member will engage with it when the su -unit-sdecimal place of the totalizer is in register with, the actuator, andkey o erated mechanism to force one :gember o the lock from the othermem- 18. In a calculating machine which embodies a traveling totalizer,an actuator ast which the totalizer travels, a device W ich has astepping movement and to which the totalizer 1s connected when it is vinuse, and a decimal carriage to which said device is 'adjustablyattached, the combination of a lock one member of Which is mounted onsaid device and the other member of which has a stationary support andis located where the movable member will engage with it when thesub-units decimal place of the totalizer is in register With t eactuator,

key operated mechanism to force one mem-4 ber o the lock from the othermember, and mechanism made effective by the totalizer unless it is inthe cleared state to preclude movement from a certain position of one ofthe parts of this key operated mechanism.

19. In a calculating machine, the combination of registering mechanism,clearance proof mechanism including a key, an automatic lock, and areleasing device for said lock, operated by said key.

20. Ina calculating machine, the combination of registering mechanism,an automatic lock, a releasing device, the lock being effective when itsmembers are engaged to prevent operation of the machine, key operatedmechanism comprising a part to actuate said releasing device, andmechanism made effective by the registering mechanism unless it is inthe cleared state to preclude movement from a certain osition of saidpart of the key operated mec anism.

21. In a calculating machine, the combination of registering mechanism,an automatic lock, a relee sing device, the lock being effective whenits members are engaged to prevent operation of the machine, keyoperated mechanism comprising a part to actuate said releasing device,and mechanism made effective by the registering mechanism unless it isin the cleared state to preclude movement of said part of the keyactuated mechanism immediately after the releasing device has beenactuated by it.

22. In a calculating machine which comprises a part that has a steppingmovement, the combination of an automatic machinelock which acts on andprevents movement in either direction of said stepping part and onemember of which has a stationary support and the automatic action ofwhich is controlled by said stepping part, and key operated `mechanismto force one member of the lock from the other member.

23. In a calculating machine Which comprises a part that has a steppingmovement, the combination of registering mechanism, an automaticmachine-lock one member of which has a stationary support and theautomatic action of which is controlled by said stepping part, keyoperated mechanism to force'one member of the lock from the othermember, and mechanism made effective by the registering mechanism when aclearing operation is incorrectly performed to preclude movement from acertain position of a part of this key operated mechanism.

24. In a calculating machine which comprises a traveling totalizer, aseparate totalizer frame, and a traveling part to which the totalizer'frame is attached and to Which said totalizer is connected when it isin use,

the combination of a lock one member of which is supported by saidtotalizer frame and the other member of which has a stationary support,and key operated mechanism to force the movable member of the lock fromthe stationary member.

25. In a calculating machine Whi'ch comprises a traveling totalizer, atotalizer frame, and a traveling part to which the totalizer frame isattached and to which said totalizer is connected when it is in use, thecombination of a lock one member of which is supported by said totalizerframe and the other member of which has a stationary support, key oerated mechanism to force one member o the lock from theother member,and mechanism made eective by said totalizer which has a stationarysupport, and key operated mechanism to force one member of the lock fromthe other, in which key operated mechanism is included a dog permanentlylocated on a stationary support and having a tooth arranged to enter oneof the v recesses in said traveling part as the key is depressed.

27. In a calculating machine which comprises a traveling totalizer and atraveling part from which the totalizer derives motion and which hasrecesses in it, the combination of a lock one member of which issupported by said traveling part and the other member of which has astationary support,

key-operated mechanism to force one member of the lock from the other,in which key operated mechanism a dog permanently located on astationary su port and movable at the depression of the liey into one ofthe recesses in said traveling art is included, and mechanism madeeffective by said totalizer when a clearing operation is incorrectlyerformed to preclude movement of the dog rom the recess.

28. In a calculating machine which comprises a cross totalizer, atotalizer frame to which the cross totalizer is connected when it is inuse, and a truck to which said totalizer frame is adjustably attachedand which has recesses in it, the combination of a lock one member ofwhich is mounted on said totalizer frame and the other member of whichhas a stationary support, and key o erated mechanism to force one membero? the lock from the 'other, in which key operated mechanism is includeda dog permanently located on a stationary support and movable at the d eression of a key into one of the recesses in t eV truck.

29. In a calculating machine which comprises a cross'totalizer, atotalizer frame to which the cross totalizer is connected when it is inuse, and a truck to which said totalizer frame is adjustably attachedand which has recesses in it, the combination of a lock one member ofwhich is mounted on said totalizer frame and the other member of whichhas a stationary support, key operated mechanism to force one member ofthe lock from the other, in which key operated mechanism adogpermanently located on a stationary support and movable at thedepression of a ey into one of the recesses in the truck is included,and mechanism made eective by the cross totalizer when a clearingoperation is incorrectl preclude movement of sai recess.

30. In a calculating machine which comprises a main truck, a secondarytruck that derives motion therefrom, a totalizer frame attached to themain truck, and a cross totalizer attached to the secondary truck, eachtruck having recesses in it, the combination of a lock one member ofwhich is mounted on said totalizer 4frame and the other member of whichhas a stationa support, key operated mechanism in whic a main dog and asecondary dog each permanently mounted on a stationary support areincluded, the main dog bein co-operative with other parts of this mecanism to force one member of the lock from the other and having a tooththat simultaneously enters one of the recesses in thel main truck, andthe secondary dog having a tooth that simultaneously enters one of therecesses in the secondary truck, and mechanism made effective by thecross totalizer When a clearing operation is incorrectly performed topreclude movement from a certain position of said seconder dog.

31. In a calcu ating machine which comprises a main truck, a secondarytruck that derives motion therefrom, a totalizer frame attached to themain truck, and a cross totalizer attached to the secondary truck, eachtruck having recesses in it, the comperformed to dog from the ybinationof a lock one member of which is mounted on said totalizer frame and theother member of which has a stationa support, key operated mechanism inwhic a main dog and a secondary dog each permanently mounted on astationary support are included, the main do being co-operative with'other arts of t is mechanism to force the Vmovab e member of the lockfrom the other and having a tooth that simultaneousl enters one of therecesses in the main truc and the secondary dog having a tooth thatsimultaneously enters one of the recesses in the secondary truck, andmechanism made effective by the cross totalizer when a clearingoperation is incorrectly performed to prevent movement of the dogs fromthe recesses in the trucks.

e 32. In a calculating4 machine comprising key actuated parts and atotalizer frame which may or may not contain registerin mechanism, thecombination of a latc mounted on the totalizer frame, and a device alsomounted n the totalizer frame and arranged to act on the latch andhaving a portion that at times extends into the path of one of the keyactuated parts of the machine.

33. In a calculating machine comprising key actuated parts and atraveling member, the combination of a latch mounted on the travelingmember, and a device also mounted on the traveling member and arrangefto act on the Eaton and having a portion that at times extends into thepath of one of the key actuated partsof the machine In a oaoulatngmachine oomprieing key actuated parte and a traveling totalzer framewhich ma or may not contain regie tering mechanism, the combination of alatch mounted on the totalzer frame, and device also mounted on thetotalzer frame and adapted to act on the latch and having; portion thatrests in the path of one of 'the key actuated parte of the machine"v1/henu ever the traveling totalize' frame reaehee eertan predeterminedposition.

Signed at the borough of Manhattan, city of New Yorin in the county ofNew York and State of New York, this 10th day of August? A, D 192i.,

ARTHUR F, Poom.

'itneeeee z LLLLMN NELeoNj M. WELLe

